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UMGZ 32x18x8 [M6] GZ / N38 - magnetic holder external thread

magnetic holder external thread

Catalog no 190324

GTIN/EAN: 5906301813835

5.00
Load capacity 34.00 kg / 333.43 N
Diameter Ø
32 mm [±1 mm]
Height
18 mm [±1 mm]
Height
8 mm [±1 mm]
Weight
40 g
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

see technical specifications »

14.62 zł net / pcs

17.98 zł with VAT (23% VAT) / pcs

price for transport

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price from 30 pcs
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price from 60 pcs
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Frequently asked questions

How much will a magnetic holder hold in practice?
The catalogue value assumes full contact with smooth steel at least 10 mm thick and a perpendicular pull. Thinner sheet, paint, rust and surface irregularities reduce it considerably: on 1 mm sheet about half remains. Lifting and vertical mounting call for an additional safety margin.
Will a holder work on stainless steel?
Not on austenitic grades 304 and 316 — they are effectively non-magnetic. It will not work on aluminium, copper or brass either. Those materials need a mechanical gripper.
Which coating for which conditions?
Nickel-copper-nickel (NiCuNi) is the standard and covers most applications. Epoxy is used for damp environments and outdoor work, zinc is sufficient for dry interiors. Holders in a steel housing or in rubber also protect the magnet against impact.

Guides from the knowledge base

Want to talk magnets?

Call us now +48 888 99 98 98 alternatively let us know using contact form the contact section.
Specifications and structure of a neodymium magnet can be estimated using our power calculator.

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Product card - UMGZ 32x18x8 [M6] GZ / N38 - magnetic holder external thread

Specification / characteristics - UMGZ 32x18x8 [M6] GZ / N38 - magnetic holder external thread

properties
properties values
Cat. no. 190324
GTIN/EAN 5906301813835
Production/Distribution Dhit sp. z o.o.
ul. Zielona 14 05-850 Ożarów Mazowiecki PL
Country of origin Poland / China / Germany
Customs code 85059029
Diameter Ø 32 mm [±1 mm]
Height 18 mm [±1 mm]
Height 8 mm [±1 mm]
Weight 40 g
Load capacity ~ ? 34.00 kg / 333.43 N
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±1 mm

Magnetic properties of material N38

Specification / characteristics UMGZ 32x18x8 [M6] GZ / N38 - magnetic holder external thread
properties values units
Remanence Br ? 12.2-12.6 kGs
Remanence Br ? 1220-1260 mT
Coercivity bHc ? 10.8-11.5 kOe
Coercivity bHc ? 860-915 kA/m
Intrinsic coercivity iHc ≥ 12 kOe
Intrinsic coercivity iHc ≥ 955 kA/m
Energy product BHmax ? 36-38 BH max MGOe
Energy product BHmax ? 287-303 BH max KJ/m
Maximum working temperature ? ≤ 80 °C

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C
properties values units
Vickers hardness ≥550 Hv
Density ≥7.4 g/cm3
Curie Temperature TC 310 °C
Curie Temperature TF 590 °F
Specific resistance 150 μΩ⋅cm
Bending strength 250 MPa
Compressive strength 1000~1100 MPa
Thermal expansion parallel (∥) to orientation (M) (3-4) x 10-6 °C-1
Thermal expansion perpendicular (⊥) to orientation (M) -(1-3) x 10-6 °C-1
Young's modulus 1.7 x 104 kg/mm²
Technical specification and ecology

Chemical composition

iron (Fe) 64% – 68%
neodymium (Nd) 29% – 32%
boron (B) 1.1% – 1.2%
dysprosium (Dy) 0.5% – 2.0%
coating (Ni-Cu-Ni) < 0.05%

Environmental data

recyclability (EoL) 100%
recycled raw materials ~10% (pre-cons)
carbon footprint low / zredukowany
waste code (EWC) 16 02 16
Safety card (GPSR)
responsible entity
Dhit sp. z o.o.
ul. Kościuszki 6A, 05-850 Ożarów Mazowiecki
tel: +48 22 499 98 98 | e-mail: bok@dhit.pl
batch number/type
id: 190324-2026
Measurement Calculator

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A magnet with a built-in screw is great for screwing with a nut to housings, profiles, and flat bars. Thanks to this, you get a solid, magnetized mounting point without welding or gluing. Used for mounting sensors, panels, plates, and exhibition elements.
The threaded stud is an integral part of the steel housing, but avoid overtightening the thread. When assembling, use a torque wrench or tighten with feeling. The construction is durable and adapted to industrial conditions.
Maximum operating temperature is 80 degrees Celsius for the standard version. If you need resistance to higher temperatures, ask about special versions (H, SH). Avoid mounting directly on hot engine or machine components.
Holders are equipped with standard metric threads (e.g., M4, M6, M8, M10). Ensure thread length is sufficient to pass through the hole in your material and tighten the nut. It is a solid threaded connection, ready for use.
Yes, the steel housing (cup) focuses the magnetic field, significantly increasing attraction force on the active side. It is a solution optimized for strong holding with direct contact, not attracting from afar.

Advantages and disadvantages of Nd2Fe14B magnets.

Advantages

Apart from their notable holding force, neodymium magnets have these key benefits:
  • They retain magnetic properties for almost ten years – the drop is just ~1% (according to analyses),
  • They feature excellent resistance to magnetism drop as a result of opposing magnetic fields,
  • A magnet with a smooth nickel surface has an effective appearance,
  • They are known for high magnetic induction at the operating surface, making them more effective,
  • Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can function (depending on the shape) even at a temperature of 230°C or more...
  • Thanks to versatility in forming and the capacity to modify to individual projects,
  • Versatile presence in electronics industry – they are utilized in mass storage devices, electromotive mechanisms, diagnostic systems, also industrial machines.
  • Thanks to efficiency per cm³, small magnets offer high operating force, with minimal size,

Disadvantages

Disadvantages of neodymium magnets:
  • To avoid cracks under impact, we suggest using special steel housings. Such a solution secures the magnet and simultaneously increases its durability.
  • When exposed to high temperature, neodymium magnets suffer a drop in strength. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
  • Magnets exposed to a humid environment can rust. Therefore when using outdoors, we recommend using waterproof magnets made of rubber, plastic or other material protecting against moisture
  • Due to limitations in realizing threads and complex shapes in magnets, we recommend using casing - magnetic holder.
  • Potential hazard to health – tiny shards of magnets pose a threat, when accidentally swallowed, which becomes key in the aspect of protecting the youngest. It is also worth noting that tiny parts of these devices are able to be problematic in diagnostics medical after entering the body.
  • Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Lifting parameters

Breakaway strength of the magnet in ideal conditions – what it depends on?

Holding force of 34.00 kg is a theoretical maximum value executed under the following configuration:
  • with the application of a sheet made of low-carbon steel, guaranteeing full magnetic saturation
  • with a thickness no less than 10 mm
  • with an ground contact surface
  • without the slightest insulating layer between the magnet and steel
  • during pulling in a direction vertical to the plane
  • at standard ambient temperature

Magnet lifting force in use – key factors

Real force is influenced by specific conditions, including (from most important):
  • Clearance – existence of any layer (paint, tape, air) interrupts the magnetic circuit, which lowers power steeply (even by 50% at 0.5 mm).
  • Pull-off angle – remember that the magnet holds strongest perpendicularly. Under shear forces, the capacity drops drastically, often to levels of 20-30% of the nominal value.
  • Wall thickness – the thinner the sheet, the weaker the hold. Magnetic flux penetrates through instead of generating force.
  • Steel grade – ideal substrate is pure iron steel. Stainless steels may generate lower lifting capacity.
  • Surface structure – the more even the surface, the larger the contact zone and stronger the hold. Roughness acts like micro-gaps.
  • Thermal factor – high temperature weakens pulling force. Too high temperature can permanently demagnetize the magnet.

Lifting capacity was assessed using a polished steel plate of suitable thickness (min. 20 mm), under perpendicular pulling force, in contrast under parallel forces the holding force is lower. Additionally, even a slight gap between the magnet and the plate decreases the load capacity.

H&S for magnets
Safe distance

Device Safety: Strong magnets can damage payment cards and sensitive devices (heart implants, hearing aids, timepieces).

Powerful field

Before starting, check safety instructions. Sudden snapping can destroy the magnet or injure your hand. Be predictive.

Magnet fragility

Despite metallic appearance, the material is delicate and cannot withstand shocks. Do not hit, as the magnet may crumble into hazardous fragments.

Allergic reactions

Nickel alert: The nickel-copper-nickel coating contains nickel. If an allergic reaction appears, cease handling magnets and use protective gear.

Compass and GPS

Navigation devices and mobile phones are highly susceptible to magnetic fields. Close proximity with a powerful NdFeB magnet can decalibrate the sensors in your phone.

Crushing risk

Large magnets can break fingers instantly. Do not put your hand betwixt two strong magnets.

Heat sensitivity

Regular neodymium magnets (N-type) lose power when the temperature exceeds 80°C. Damage is permanent.

No play value

NdFeB magnets are not toys. Eating a few magnets may result in them pinching intestinal walls, which constitutes a direct threat to life and necessitates immediate surgery.

Fire risk

Fire hazard: Neodymium dust is explosive. Avoid machining magnets without safety gear as this risks ignition.

ICD Warning

For implant holders: Strong magnetic fields affect medical devices. Keep at least 30 cm distance or request help to work with the magnets.

Security! Looking for details? Check our post: Are neodymium magnets dangerous?